<TITLE>BGI Documentation for 
drawpoly
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drawpoly
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<DT><B>Syntax</B><DD>
<PRE>
#include &lt;graphics.h&gt;
void drawpoly(int numpoints, int *polypoints);
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<DT><B>Description</B><DD>
drawpoly draws a polygon with numpoints points, using the current line style and color.
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*polypoints points to a sequence of (numpoints * 2) integers. Each pair of integers gives the x- and y-coordinates of a point on the polygon.
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In order to draw a closed figure with n vertices, you must pass n + 1 coordinates to drawpoly where the nth coordinate is equal to the 0th.


<P><DT><B>Return Value</B><DD>
None.


<P><DT><B>See also</B>
<DD><A HREF="fillpoly.html"> fillpoly </A>
<DD><A HREF="floodfill.html"> floodfill </A>
<DD><A HREF="graphresult.html"> graphresult </A>
<DD><A HREF="setwritemode.html"> setwritemode </A>


<P><DT><B>Example</B><DD>
<PRE>
/* drawpoly example */ 

#include &lt;graphics.h&gt;
#include &lt;stdlib.h&gt;
#include &lt;stdio.h&gt;
#include &lt;conio.h&gt;

int main(void)
{
   /* request autodetection */
   int gdriver = DETECT, gmode, errorcode;
   int maxx, maxy;

   int poly[10];   /* our polygon array */

   /* initialize graphics and local variables */
   initgraph(&gdriver, &gmode, "");

   /* read result of initialization */
   errorcode = graphresult();
   if (errorcode != grOk){ /* an error occurred */
      printf("Graphics error: %s\n", grapherrormsg(errorcode));

      printf("Press any key to halt:");
      getch();
      exit(1);             /* terminate with an error code */
   }

   maxx = getmaxx();
   maxy = getmaxy();
   poly[0] = 20;           /* first vertex */
   poly[1] = maxy / 2;
   poly[2] = maxx - 20;    /* second vertex */
   poly[3] = 20;
   poly[4] = maxx - 50;    /* third vertex */
   poly[5] = maxy - 20;
   poly[6] = maxx / 2;     /* fourth vertex */
   poly[7] = maxy / 2;
   poly[8] = poly[0];      /* drawpoly doesn't automatically close */

   poly[9] = poly[1];      /* the polygon, so we close it */

   drawpoly(5, poly);   /* draw the polygon */

   /* clean up */
   getch();
   closegraph();
   return 0;
}
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